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电池保护器

BQ29419

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用于 2、3 或 4 节锂离子电池的电压保护

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数据表

BQ29419

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产品详情

Function Protection Number of series cells (min) 2, 3, 4 Number of series cells (max) 3, 4 Features Overvoltage, Single pin output drive Operating current (typ) (µA) 2 Rating Catalog Vin (max) (V) 25 Overvoltage protection 4.3 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 4.275 Battery overvoltage protection (max) (V) 4.325
Function Protection Number of series cells (min) 2, 3, 4 Number of series cells (max) 3, 4 Features Overvoltage, Single pin output drive Operating current (typ) (µA) 2 Rating Catalog Vin (max) (V) 25 Overvoltage protection 4.3 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 4.275 Battery overvoltage protection (max) (V) 4.325
TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • 2-, 3-, or 4-Cell Secondary Protection
  • Low Power Consumption ICC < 2 µA [VCELL(ALL) < V(PROTECT)]
  • Fixed High Accuracy Overvoltage Protection Threshold
    • bq29410 = 4.35 V
    • bq29411 = 4.40 V
    • bq29412 = 4.45 V
    • bq29413 = 4.50 V
    • bq29414 = 4.55 V
    • bq29415 = 4.60 V
    • bq29419 = 4.30 V
  • Programmable Delay Time of Detection
  • High Power Supply Ripple Rejection
  • Stable During Pulse Charge Operation
  • APPLICATIONS
    • 2nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
      • Notebook Computers
      • Portable Instrumentation
      • Portable Equipment
  • 2-, 3-, or 4-Cell Secondary Protection
  • Low Power Consumption ICC < 2 µA [VCELL(ALL) < V(PROTECT)]
  • Fixed High Accuracy Overvoltage Protection Threshold
    • bq29410 = 4.35 V
    • bq29411 = 4.40 V
    • bq29412 = 4.45 V
    • bq29413 = 4.50 V
    • bq29414 = 4.55 V
    • bq29415 = 4.60 V
    • bq29419 = 4.30 V
  • Programmable Delay Time of Detection
  • High Power Supply Ripple Rejection
  • Stable During Pulse Charge Operation
  • APPLICATIONS
    • 2nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
      • Notebook Computers
      • Portable Instrumentation
      • Portable Equipment

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

Each cell in a multiple-cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2941x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

Each cell in a multiple-cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2941x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.
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类型 标题 下载最新的英语版本 日期
* 数据表 Voltage Protection for 2-, 3-, or 4-Cell Li-Ion Batteries (2nd Level Protection) 数据表 (Rev. G) 2008年 8月 18日
应用手册 Stacking Multiple bqq2941x Li-Ion Secondary Voltage Protectors 2007年 8月 27日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 8 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

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包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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